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Old 01-01-2013, 01:18 PM   #1
FloridaTJ's Avatar
Join Date: Aug 2012
Location: Florida
Posts: 123

Overheating on highway driving, 04 Sport 4.0L 6cyl. My jeep overheats while on the highway, driving around town it's perfectly fine, the other day I drove on the highway it was perfect, only sometimes gets hot, any ideas on what the problem can be? It had fresh coolant, thermostat,

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Old 01-01-2013, 03:14 PM   #2
Join Date: Apr 2009
Location: Wolf Lake, IL
Posts: 768
I'm no mechanic but I'll share my experience. My '04 did the same thing last summer. Kept using coolant. Replaced cap and worked for a while. Came back and replaced pump. Fixed for a while. Then radiator tank split. Replaced that and I've been good to go. Good luck.

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Old 01-01-2013, 04:12 PM   #3
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Join Date: Sep 2012
Location: Chillicothe, Ohio
Posts: 2,768
Check your fan clutch and radiator cap.

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Old 01-01-2013, 04:17 PM   #4
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Join Date: May 2012
Location: CA
Posts: 768
Sounds like an airflow issue...cleaning the radiator fins with a hose would be my first step. If you have the original cap on i'd replace that also they're around $5...probably not the problem but it's good preventive maintenance either way.
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